The recipe was moved last September to an undisclosed location while KFC's internal security was revamped.

When dabbling around his kitchen in 1940, it is very unlikely that Col. Harland Sanders thought that one day the recipe he was creating for fried chicken breading would garner this type of security.

"This recipe has amazing global importance and the reason is that you could maybe put on your hand the number of world, global trade secrets that are housed in a single packet, in a single form," said KFC President Roger Eaton.

Former New York City police detective and security expert Bo Dietl, whose clients include names like Donald Trump, President George H. Bush and the Saudi royal family was engaged to keep the recipe safe, but even he was a little curious.

"The little devil on one side said, 'Open it, look at it,'" he said. "The angel says, 'You're a professional.'"

"I know that if our security team recommends Bo, that's good enough for me," Eaton said. "I think part of his expertise is that he's been around the world, when I'm not sure but, he's very experienced and certainly the technology he's brought in I'm very impressed by."

"We fortified the ceiling and the floor around here with concrete bricks two feet thick," Dietl said. "We put in motion sensors also CCTV that's hooked up to security downstairs. They have 24/7 armed guys downstairs, so in the amount of 30 seconds you'll have somebody up here. Once in here, you have to have two people with two keys and two different PIN numbers, and that's what you have to have. This safe is bolted down and there is no way anybody can get in here unauthorized without us knowing about it."

Portions of the secret recipe are known by a select few among the executives at Yum! Brands, KFC's parent company, but only two people in the entire organization know it in its entirety.

As to the identities of those individuals, executives refuse to comment.